2. A fresh feed stream contains liquid mixture containing 60 mol% A, 25 mol% B, and the remainder C is fed to a distillation column. The fresh feed molar flow rate is 100 kmol/h. The bottom product contains 5.0 mol% A, 92 mol% B, and 86.7% of the C in the feed is recovered in this stream. The bottom product is mixed with a second feed stream composed of 50 kmol/h A and 50 kmol/h B and then fed to a second column. The total amount of the overhead product of the second column is 60 moles and it is composed of only A and B. The overhead product from the second column contains 83.33 mol% A of fresh feed that is fed to first distillation column. a. Draw and completely label a flow sheet of the process. b. Calculate the amounts and compositions of all streams.

Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
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2. A fresh feed stream contains liquid mixture containing 60 mol% A, 25 mol% B, and the
remainder C is fed to a distillation column. The fresh feed molar flow rate is 100
kmol/h. The bottom product contains 5.0 mol% A, 92 mol% B, and 86.7% of the C in
the feed is recovered in this stream. The bottom product is mixed with a second feed
stream composed of 50 kmol/h A and 50 kmol/h B and then fed to a second column.
The total amount of the overhead product of the second column is 60 moles and it is
composed of only A and B. The overhead product from the second column contains
83.33 mol% A of fresh feed that is fed to first distillation column.
a. Draw and completely label a flow sheet of the process.
b. Calculate the amounts and compositions of all streams.
Transcribed Image Text:2. A fresh feed stream contains liquid mixture containing 60 mol% A, 25 mol% B, and the remainder C is fed to a distillation column. The fresh feed molar flow rate is 100 kmol/h. The bottom product contains 5.0 mol% A, 92 mol% B, and 86.7% of the C in the feed is recovered in this stream. The bottom product is mixed with a second feed stream composed of 50 kmol/h A and 50 kmol/h B and then fed to a second column. The total amount of the overhead product of the second column is 60 moles and it is composed of only A and B. The overhead product from the second column contains 83.33 mol% A of fresh feed that is fed to first distillation column. a. Draw and completely label a flow sheet of the process. b. Calculate the amounts and compositions of all streams.
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